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23cd1385 RB |
1 | /* |
2 | * ether.c -- Ethernet gadget driver, with CDC and non-CDC options | |
3 | * | |
4 | * Copyright (C) 2003-2005,2008 David Brownell | |
5 | * Copyright (C) 2003-2004 Robert Schwebel, Benedikt Spranger | |
6 | * Copyright (C) 2008 Nokia Corporation | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2 of the License, or | |
11 | * (at your option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software | |
20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
21 | */ | |
22 | ||
23 | #include <common.h> | |
24 | #include <asm/errno.h> | |
25 | #include <linux/usb/ch9.h> | |
26 | #include <linux/usb/cdc.h> | |
27 | #include <linux/usb/gadget.h> | |
28 | #include <net.h> | |
29 | #include <linux/ctype.h> | |
30 | ||
31 | #include "gadget_chips.h" | |
32 | ||
33 | #define USB_NET_NAME "usb0" | |
7de73185 | 34 | |
23cd1385 RB |
35 | #define atomic_read |
36 | extern struct platform_data brd; | |
37 | #define spin_lock(x) | |
38 | #define spin_unlock(x) | |
39 | ||
40 | ||
41 | unsigned packet_received, packet_sent; | |
42 | ||
43 | #define DEV_CONFIG_CDC 1 | |
44 | #define GFP_ATOMIC ((gfp_t) 0) | |
45 | #define GFP_KERNEL ((gfp_t) 0) | |
46 | ||
47 | /* | |
48 | * Ethernet gadget driver -- with CDC and non-CDC options | |
49 | * Builds on hardware support for a full duplex link. | |
50 | * | |
51 | * CDC Ethernet is the standard USB solution for sending Ethernet frames | |
52 | * using USB. Real hardware tends to use the same framing protocol but look | |
53 | * different for control features. This driver strongly prefers to use | |
54 | * this USB-IF standard as its open-systems interoperability solution; | |
55 | * most host side USB stacks (except from Microsoft) support it. | |
56 | * | |
57 | * This is sometimes called "CDC ECM" (Ethernet Control Model) to support | |
58 | * TLA-soup. "CDC ACM" (Abstract Control Model) is for modems, and a new | |
59 | * "CDC EEM" (Ethernet Emulation Model) is starting to spread. | |
60 | * | |
61 | * There's some hardware that can't talk CDC ECM. We make that hardware | |
62 | * implement a "minimalist" vendor-agnostic CDC core: same framing, but | |
63 | * link-level setup only requires activating the configuration. Only the | |
64 | * endpoint descriptors, and product/vendor IDs, are relevant; no control | |
65 | * operations are available. Linux supports it, but other host operating | |
66 | * systems may not. (This is a subset of CDC Ethernet.) | |
67 | * | |
68 | * It turns out that if you add a few descriptors to that "CDC Subset", | |
69 | * (Windows) host side drivers from MCCI can treat it as one submode of | |
70 | * a proprietary scheme called "SAFE" ... without needing to know about | |
71 | * specific product/vendor IDs. So we do that, making it easier to use | |
72 | * those MS-Windows drivers. Those added descriptors make it resemble a | |
73 | * CDC MDLM device, but they don't change device behavior at all. (See | |
74 | * MCCI Engineering report 950198 "SAFE Networking Functions".) | |
75 | * | |
76 | * A third option is also in use. Rather than CDC Ethernet, or something | |
77 | * simpler, Microsoft pushes their own approach: RNDIS. The published | |
78 | * RNDIS specs are ambiguous and appear to be incomplete, and are also | |
79 | * needlessly complex. They borrow more from CDC ACM than CDC ECM. | |
80 | */ | |
81 | #define ETH_ALEN 6 /* Octets in one ethernet addr */ | |
82 | #define ETH_HLEN 14 /* Total octets in header. */ | |
83 | #define ETH_ZLEN 60 /* Min. octets in frame sans FCS */ | |
84 | #define ETH_DATA_LEN 1500 /* Max. octets in payload */ | |
85 | #define ETH_FRAME_LEN PKTSIZE_ALIGN /* Max. octets in frame sans FCS */ | |
86 | #define ETH_FCS_LEN 4 /* Octets in the FCS */ | |
87 | ||
88 | #define DRIVER_DESC "Ethernet Gadget" | |
89 | /* Based on linux 2.6.27 version */ | |
90 | #define DRIVER_VERSION "May Day 2005" | |
91 | ||
92 | static const char shortname [] = "ether"; | |
93 | static const char driver_desc [] = DRIVER_DESC; | |
94 | ||
95 | #define RX_EXTRA 20 /* guard against rx overflows */ | |
96 | ||
97 | /* CDC support the same host-chosen outgoing packet filters. */ | |
98 | #define DEFAULT_FILTER (USB_CDC_PACKET_TYPE_BROADCAST \ | |
99 | |USB_CDC_PACKET_TYPE_ALL_MULTICAST \ | |
100 | |USB_CDC_PACKET_TYPE_PROMISCUOUS \ | |
101 | |USB_CDC_PACKET_TYPE_DIRECTED) | |
102 | ||
103 | #define USB_CONNECT_TIMEOUT (3 * CONFIG_SYS_HZ) | |
104 | ||
105 | /*-------------------------------------------------------------------------*/ | |
106 | static struct eth_dev l_ethdev; | |
107 | static struct eth_device l_netdev; | |
108 | static struct usb_gadget_driver eth_driver; | |
109 | ||
110 | /*-------------------------------------------------------------------------*/ | |
111 | ||
112 | /* "main" config is either CDC, or its simple subset */ | |
113 | static inline int is_cdc(struct eth_dev *dev) | |
114 | { | |
115 | #if !defined(DEV_CONFIG_SUBSET) | |
116 | return 1; /* only cdc possible */ | |
117 | #elif !defined (DEV_CONFIG_CDC) | |
118 | return 0; /* only subset possible */ | |
119 | #else | |
120 | return dev->cdc; /* depends on what hardware we found */ | |
121 | #endif | |
122 | } | |
123 | ||
124 | #define subset_active(dev) (!is_cdc(dev)) | |
125 | #define cdc_active(dev) ( is_cdc(dev)) | |
126 | ||
127 | #define DEFAULT_QLEN 2 /* double buffering by default */ | |
128 | ||
129 | /* peak bulk transfer bits-per-second */ | |
130 | #define HS_BPS (13 * 512 * 8 * 1000 * 8) | |
131 | #define FS_BPS (19 * 64 * 1 * 1000 * 8) | |
132 | ||
133 | #ifdef CONFIG_USB_GADGET_DUALSPEED | |
134 | #define DEVSPEED USB_SPEED_HIGH | |
135 | ||
2721dbf1 VK |
136 | #ifdef CONFIG_USB_ETH_QMULT |
137 | #define qmult CONFIG_USB_ETH_QMULT | |
138 | #else | |
139 | #define qmult 5 | |
140 | #endif | |
141 | ||
23cd1385 RB |
142 | /* for dual-speed hardware, use deeper queues at highspeed */ |
143 | #define qlen(gadget) \ | |
144 | (DEFAULT_QLEN*((gadget->speed == USB_SPEED_HIGH) ? qmult : 1)) | |
145 | ||
146 | static inline int BITRATE(struct usb_gadget *g) | |
147 | { | |
148 | return (g->speed == USB_SPEED_HIGH) ? HS_BPS : FS_BPS; | |
149 | } | |
150 | ||
151 | #else /* full speed (low speed doesn't do bulk) */ | |
152 | ||
153 | #define qmult 1 | |
154 | ||
155 | #define DEVSPEED USB_SPEED_FULL | |
156 | ||
157 | #define qlen(gadget) DEFAULT_QLEN | |
158 | ||
159 | static inline int BITRATE(struct usb_gadget *g) | |
160 | { | |
161 | return FS_BPS; | |
162 | } | |
163 | #endif | |
164 | ||
165 | struct eth_dev { | |
166 | struct usb_gadget *gadget; | |
167 | struct usb_request *req; /* for control responses */ | |
168 | struct usb_request *stat_req; /* for cdc status */ | |
169 | ||
170 | u8 config; | |
171 | struct usb_ep *in_ep, *out_ep, *status_ep; | |
172 | const struct usb_endpoint_descriptor | |
173 | *in, *out, *status; | |
174 | ||
175 | struct usb_request *tx_req, *rx_req; | |
176 | ||
177 | struct eth_device *net; | |
178 | unsigned int tx_qlen; | |
179 | ||
180 | unsigned zlp:1; | |
181 | unsigned cdc:1; | |
182 | unsigned suspended:1; | |
183 | unsigned network_started:1; | |
184 | u16 cdc_filter; | |
185 | unsigned long todo; | |
186 | int mtu; | |
187 | #define WORK_RX_MEMORY 0 | |
188 | u8 host_mac [ETH_ALEN]; | |
189 | }; | |
190 | ||
191 | /* This version autoconfigures as much as possible at run-time. | |
192 | * | |
193 | * It also ASSUMES a self-powered device, without remote wakeup, | |
194 | * although remote wakeup support would make sense. | |
195 | */ | |
196 | ||
197 | /*-------------------------------------------------------------------------*/ | |
198 | ||
199 | /* DO NOT REUSE THESE IDs with a protocol-incompatible driver!! Ever!! | |
200 | * Instead: allocate your own, using normal USB-IF procedures. | |
201 | */ | |
202 | ||
203 | /* Thanks to NetChip Technologies for donating this product ID. | |
204 | * It's for devices with only CDC Ethernet configurations. | |
205 | */ | |
206 | #define CDC_VENDOR_NUM 0x0525 /* NetChip */ | |
207 | #define CDC_PRODUCT_NUM 0xa4a1 /* Linux-USB Ethernet Gadget */ | |
208 | ||
209 | /* For hardware that can't talk CDC, we use the same vendor ID that | |
210 | * ARM Linux has used for ethernet-over-usb, both with sa1100 and | |
211 | * with pxa250. We're protocol-compatible, if the host-side drivers | |
212 | * use the endpoint descriptors. bcdDevice (version) is nonzero, so | |
213 | * drivers that need to hard-wire endpoint numbers have a hook. | |
214 | * | |
215 | * The protocol is a minimal subset of CDC Ether, which works on any bulk | |
216 | * hardware that's not deeply broken ... even on hardware that can't talk | |
217 | * RNDIS (like SA-1100, with no interrupt endpoint, or anything that | |
218 | * doesn't handle control-OUT). | |
219 | */ | |
220 | #define SIMPLE_VENDOR_NUM 0x049f | |
221 | #define SIMPLE_PRODUCT_NUM 0x505a | |
222 | ||
223 | /* Some systems will want different product identifers published in the | |
224 | * device descriptor, either numbers or strings or both. These string | |
225 | * parameters are in UTF-8 (superset of ASCII's 7 bit characters). | |
226 | */ | |
227 | ||
228 | static ushort bcdDevice; | |
229 | #if defined(CONFIG_USBNET_MANUFACTURER) | |
230 | static char *iManufacturer = CONFIG_USBNET_MANUFACTURER; | |
231 | #else | |
232 | static char *iManufacturer = "U-boot"; | |
233 | #endif | |
234 | static char *iProduct; | |
235 | static char *iSerialNumber; | |
236 | static char dev_addr[18]; | |
237 | static char host_addr[18]; | |
238 | ||
239 | /*-------------------------------------------------------------------------*/ | |
240 | ||
241 | /* USB DRIVER HOOKUP (to the hardware driver, below us), mostly | |
242 | * ep0 implementation: descriptors, config management, setup(). | |
243 | * also optional class-specific notification interrupt transfer. | |
244 | */ | |
245 | ||
246 | /* | |
247 | * DESCRIPTORS ... most are static, but strings and (full) configuration | |
248 | * descriptors are built on demand. For now we do either full CDC, or | |
249 | * our simple subset. | |
250 | */ | |
251 | ||
252 | #define STRING_MANUFACTURER 1 | |
253 | #define STRING_PRODUCT 2 | |
254 | #define STRING_ETHADDR 3 | |
255 | #define STRING_DATA 4 | |
256 | #define STRING_CONTROL 5 | |
257 | #define STRING_CDC 7 | |
258 | #define STRING_SUBSET 8 | |
259 | #define STRING_SERIALNUMBER 10 | |
260 | ||
261 | /* holds our biggest descriptor */ | |
262 | #define USB_BUFSIZ 256 | |
263 | ||
264 | /* | |
265 | * This device advertises one configuration, eth_config, | |
266 | * on hardware supporting at least two configs. | |
267 | * | |
268 | * FIXME define some higher-powered configurations to make it easier | |
269 | * to recharge batteries ... | |
270 | */ | |
271 | ||
272 | #define DEV_CONFIG_VALUE 1 /* cdc or subset */ | |
273 | ||
274 | static struct usb_device_descriptor | |
275 | device_desc = { | |
276 | .bLength = sizeof device_desc, | |
277 | .bDescriptorType = USB_DT_DEVICE, | |
278 | ||
279 | .bcdUSB = __constant_cpu_to_le16 (0x0200), | |
280 | ||
281 | .bDeviceClass = USB_CLASS_COMM, | |
282 | .bDeviceSubClass = 0, | |
283 | .bDeviceProtocol = 0, | |
284 | ||
285 | .idVendor = __constant_cpu_to_le16 (CDC_VENDOR_NUM), | |
286 | .idProduct = __constant_cpu_to_le16 (CDC_PRODUCT_NUM), | |
287 | .iManufacturer = STRING_MANUFACTURER, | |
288 | .iProduct = STRING_PRODUCT, | |
289 | .bNumConfigurations = 1, | |
290 | }; | |
291 | ||
292 | static struct usb_otg_descriptor | |
293 | otg_descriptor = { | |
294 | .bLength = sizeof otg_descriptor, | |
295 | .bDescriptorType = USB_DT_OTG, | |
296 | ||
297 | .bmAttributes = USB_OTG_SRP, | |
298 | }; | |
299 | ||
300 | static struct usb_config_descriptor | |
301 | eth_config = { | |
302 | .bLength = sizeof eth_config, | |
303 | .bDescriptorType = USB_DT_CONFIG, | |
304 | ||
305 | /* compute wTotalLength on the fly */ | |
306 | .bNumInterfaces = 2, | |
307 | .bConfigurationValue = DEV_CONFIG_VALUE, | |
308 | .iConfiguration = STRING_CDC, | |
309 | .bmAttributes = USB_CONFIG_ATT_ONE | USB_CONFIG_ATT_SELFPOWER, | |
310 | .bMaxPower = 1, | |
311 | }; | |
312 | ||
313 | /* | |
314 | * Compared to the simple CDC subset, the full CDC Ethernet model adds | |
315 | * three class descriptors, two interface descriptors, optional status | |
316 | * endpoint. Both have a "data" interface and two bulk endpoints. | |
317 | * There are also differences in how control requests are handled. | |
318 | */ | |
319 | ||
320 | #ifdef DEV_CONFIG_CDC | |
321 | static struct usb_interface_descriptor | |
322 | control_intf = { | |
323 | .bLength = sizeof control_intf, | |
324 | .bDescriptorType = USB_DT_INTERFACE, | |
325 | ||
326 | .bInterfaceNumber = 0, | |
327 | /* status endpoint is optional; this may be patched later */ | |
328 | .bNumEndpoints = 1, | |
329 | .bInterfaceClass = USB_CLASS_COMM, | |
330 | .bInterfaceSubClass = USB_CDC_SUBCLASS_ETHERNET, | |
331 | .bInterfaceProtocol = USB_CDC_PROTO_NONE, | |
332 | .iInterface = STRING_CONTROL, | |
333 | }; | |
334 | #endif | |
335 | ||
336 | static const struct usb_cdc_header_desc header_desc = { | |
337 | .bLength = sizeof header_desc, | |
338 | .bDescriptorType = USB_DT_CS_INTERFACE, | |
339 | .bDescriptorSubType = USB_CDC_HEADER_TYPE, | |
340 | ||
341 | .bcdCDC = __constant_cpu_to_le16 (0x0110), | |
342 | }; | |
343 | ||
344 | #if defined(DEV_CONFIG_CDC) | |
345 | ||
346 | static const struct usb_cdc_union_desc union_desc = { | |
347 | .bLength = sizeof union_desc, | |
348 | .bDescriptorType = USB_DT_CS_INTERFACE, | |
349 | .bDescriptorSubType = USB_CDC_UNION_TYPE, | |
350 | ||
351 | .bMasterInterface0 = 0, /* index of control interface */ | |
352 | .bSlaveInterface0 = 1, /* index of DATA interface */ | |
353 | }; | |
354 | ||
355 | #endif /* CDC */ | |
356 | ||
357 | #ifndef DEV_CONFIG_CDC | |
358 | ||
359 | /* "SAFE" loosely follows CDC WMC MDLM, violating the spec in various | |
360 | * ways: data endpoints live in the control interface, there's no data | |
361 | * interface, and it's not used to talk to a cell phone radio. | |
362 | */ | |
363 | ||
364 | static const struct usb_cdc_mdlm_desc mdlm_desc = { | |
365 | .bLength = sizeof mdlm_desc, | |
366 | .bDescriptorType = USB_DT_CS_INTERFACE, | |
367 | .bDescriptorSubType = USB_CDC_MDLM_TYPE, | |
368 | ||
369 | .bcdVersion = __constant_cpu_to_le16(0x0100), | |
370 | .bGUID = { | |
371 | 0x5d, 0x34, 0xcf, 0x66, 0x11, 0x18, 0x11, 0xd6, | |
372 | 0xa2, 0x1a, 0x00, 0x01, 0x02, 0xca, 0x9a, 0x7f, | |
373 | }, | |
374 | }; | |
375 | ||
376 | /* since "usb_cdc_mdlm_detail_desc" is a variable length structure, we | |
377 | * can't really use its struct. All we do here is say that we're using | |
378 | * the submode of "SAFE" which directly matches the CDC Subset. | |
379 | */ | |
380 | static const u8 mdlm_detail_desc[] = { | |
381 | 6, | |
382 | USB_DT_CS_INTERFACE, | |
383 | USB_CDC_MDLM_DETAIL_TYPE, | |
384 | ||
385 | 0, /* "SAFE" */ | |
386 | 0, /* network control capabilities (none) */ | |
387 | 0, /* network data capabilities ("raw" encapsulation) */ | |
388 | }; | |
389 | ||
390 | #endif | |
391 | ||
392 | ||
393 | static const struct usb_cdc_ether_desc ether_desc = { | |
394 | .bLength = sizeof (ether_desc), | |
395 | .bDescriptorType = USB_DT_CS_INTERFACE, | |
396 | .bDescriptorSubType = USB_CDC_ETHERNET_TYPE, | |
397 | ||
398 | /* this descriptor actually adds value, surprise! */ | |
399 | .iMACAddress = STRING_ETHADDR, | |
400 | .bmEthernetStatistics = __constant_cpu_to_le32 (0), /* no statistics */ | |
401 | .wMaxSegmentSize = __constant_cpu_to_le16 (ETH_FRAME_LEN), | |
402 | .wNumberMCFilters = __constant_cpu_to_le16 (0), | |
403 | .bNumberPowerFilters = 0, | |
404 | }; | |
405 | ||
406 | ||
407 | #if defined(DEV_CONFIG_CDC) | |
408 | ||
409 | /* include the status endpoint if we can, even where it's optional. | |
410 | * use wMaxPacketSize big enough to fit CDC_NOTIFY_SPEED_CHANGE in one | |
411 | * packet, to simplify cancellation; and a big transfer interval, to | |
412 | * waste less bandwidth. | |
413 | * | |
414 | * some drivers (like Linux 2.4 cdc-ether!) "need" it to exist even | |
415 | * if they ignore the connect/disconnect notifications that real aether | |
416 | * can provide. more advanced cdc configurations might want to support | |
417 | * encapsulated commands (vendor-specific, using control-OUT). | |
418 | */ | |
419 | ||
420 | #define LOG2_STATUS_INTERVAL_MSEC 5 /* 1 << 5 == 32 msec */ | |
421 | #define STATUS_BYTECOUNT 16 /* 8 byte header + data */ | |
422 | ||
423 | static struct usb_endpoint_descriptor | |
424 | fs_status_desc = { | |
425 | .bLength = USB_DT_ENDPOINT_SIZE, | |
426 | .bDescriptorType = USB_DT_ENDPOINT, | |
427 | ||
428 | .bEndpointAddress = USB_DIR_IN, | |
429 | .bmAttributes = USB_ENDPOINT_XFER_INT, | |
430 | .wMaxPacketSize = __constant_cpu_to_le16 (STATUS_BYTECOUNT), | |
431 | .bInterval = 1 << LOG2_STATUS_INTERVAL_MSEC, | |
432 | }; | |
433 | #endif | |
434 | ||
435 | #ifdef DEV_CONFIG_CDC | |
436 | ||
437 | /* the default data interface has no endpoints ... */ | |
438 | ||
439 | static const struct usb_interface_descriptor | |
440 | data_nop_intf = { | |
441 | .bLength = sizeof data_nop_intf, | |
442 | .bDescriptorType = USB_DT_INTERFACE, | |
443 | ||
444 | .bInterfaceNumber = 1, | |
445 | .bAlternateSetting = 0, | |
446 | .bNumEndpoints = 0, | |
447 | .bInterfaceClass = USB_CLASS_CDC_DATA, | |
448 | .bInterfaceSubClass = 0, | |
449 | .bInterfaceProtocol = 0, | |
450 | }; | |
451 | ||
452 | /* ... but the "real" data interface has two bulk endpoints */ | |
453 | ||
454 | static const struct usb_interface_descriptor | |
455 | data_intf = { | |
456 | .bLength = sizeof data_intf, | |
457 | .bDescriptorType = USB_DT_INTERFACE, | |
458 | ||
459 | .bInterfaceNumber = 1, | |
460 | .bAlternateSetting = 1, | |
461 | .bNumEndpoints = 2, | |
462 | .bInterfaceClass = USB_CLASS_CDC_DATA, | |
463 | .bInterfaceSubClass = 0, | |
464 | .bInterfaceProtocol = 0, | |
465 | .iInterface = STRING_DATA, | |
466 | }; | |
467 | ||
468 | #endif | |
469 | ||
470 | #ifdef DEV_CONFIG_SUBSET | |
471 | ||
472 | /* | |
473 | * "Simple" CDC-subset option is a simple vendor-neutral model that most | |
474 | * full speed controllers can handle: one interface, two bulk endpoints. | |
475 | * | |
476 | * To assist host side drivers, we fancy it up a bit, and add descriptors | |
477 | * so some host side drivers will understand it as a "SAFE" variant. | |
478 | */ | |
479 | ||
480 | static const struct usb_interface_descriptor | |
481 | subset_data_intf = { | |
482 | .bLength = sizeof subset_data_intf, | |
483 | .bDescriptorType = USB_DT_INTERFACE, | |
484 | ||
485 | .bInterfaceNumber = 0, | |
486 | .bAlternateSetting = 0, | |
487 | .bNumEndpoints = 2, | |
488 | .bInterfaceClass = USB_CLASS_COMM, | |
489 | .bInterfaceSubClass = USB_CDC_SUBCLASS_MDLM, | |
490 | .bInterfaceProtocol = 0, | |
491 | .iInterface = STRING_DATA, | |
492 | }; | |
493 | ||
494 | #endif /* SUBSET */ | |
495 | ||
496 | ||
497 | static struct usb_endpoint_descriptor | |
498 | fs_source_desc = { | |
499 | .bLength = USB_DT_ENDPOINT_SIZE, | |
500 | .bDescriptorType = USB_DT_ENDPOINT, | |
501 | ||
502 | .bEndpointAddress = USB_DIR_IN, | |
503 | .bmAttributes = USB_ENDPOINT_XFER_BULK, | |
504 | }; | |
505 | ||
506 | static struct usb_endpoint_descriptor | |
507 | fs_sink_desc = { | |
508 | .bLength = USB_DT_ENDPOINT_SIZE, | |
509 | .bDescriptorType = USB_DT_ENDPOINT, | |
510 | ||
511 | .bEndpointAddress = USB_DIR_OUT, | |
512 | .bmAttributes = USB_ENDPOINT_XFER_BULK, | |
513 | }; | |
514 | ||
515 | static const struct usb_descriptor_header *fs_eth_function [11] = { | |
516 | (struct usb_descriptor_header *) &otg_descriptor, | |
517 | #ifdef DEV_CONFIG_CDC | |
518 | /* "cdc" mode descriptors */ | |
519 | (struct usb_descriptor_header *) &control_intf, | |
520 | (struct usb_descriptor_header *) &header_desc, | |
521 | (struct usb_descriptor_header *) &union_desc, | |
522 | (struct usb_descriptor_header *) ðer_desc, | |
523 | /* NOTE: status endpoint may need to be removed */ | |
524 | (struct usb_descriptor_header *) &fs_status_desc, | |
525 | /* data interface, with altsetting */ | |
526 | (struct usb_descriptor_header *) &data_nop_intf, | |
527 | (struct usb_descriptor_header *) &data_intf, | |
528 | (struct usb_descriptor_header *) &fs_source_desc, | |
529 | (struct usb_descriptor_header *) &fs_sink_desc, | |
530 | NULL, | |
531 | #endif /* DEV_CONFIG_CDC */ | |
532 | }; | |
533 | ||
534 | static inline void fs_subset_descriptors(void) | |
535 | { | |
536 | #ifdef DEV_CONFIG_SUBSET | |
537 | /* behavior is "CDC Subset"; extra descriptors say "SAFE" */ | |
538 | fs_eth_function[1] = (struct usb_descriptor_header *) &subset_data_intf; | |
539 | fs_eth_function[2] = (struct usb_descriptor_header *) &header_desc; | |
540 | fs_eth_function[3] = (struct usb_descriptor_header *) &mdlm_desc; | |
541 | fs_eth_function[4] = (struct usb_descriptor_header *) &mdlm_detail_desc; | |
542 | fs_eth_function[5] = (struct usb_descriptor_header *) ðer_desc; | |
543 | fs_eth_function[6] = (struct usb_descriptor_header *) &fs_source_desc; | |
544 | fs_eth_function[7] = (struct usb_descriptor_header *) &fs_sink_desc; | |
545 | fs_eth_function[8] = NULL; | |
546 | #else | |
547 | fs_eth_function[1] = NULL; | |
548 | #endif | |
549 | } | |
550 | ||
551 | /* | |
552 | * usb 2.0 devices need to expose both high speed and full speed | |
553 | * descriptors, unless they only run at full speed. | |
554 | */ | |
555 | ||
556 | #if defined(DEV_CONFIG_CDC) | |
557 | static struct usb_endpoint_descriptor | |
558 | hs_status_desc = { | |
559 | .bLength = USB_DT_ENDPOINT_SIZE, | |
560 | .bDescriptorType = USB_DT_ENDPOINT, | |
561 | ||
562 | .bmAttributes = USB_ENDPOINT_XFER_INT, | |
563 | .wMaxPacketSize = __constant_cpu_to_le16 (STATUS_BYTECOUNT), | |
564 | .bInterval = LOG2_STATUS_INTERVAL_MSEC + 4, | |
565 | }; | |
566 | #endif /* DEV_CONFIG_CDC */ | |
567 | ||
568 | static struct usb_endpoint_descriptor | |
569 | hs_source_desc = { | |
570 | .bLength = USB_DT_ENDPOINT_SIZE, | |
571 | .bDescriptorType = USB_DT_ENDPOINT, | |
572 | ||
573 | .bmAttributes = USB_ENDPOINT_XFER_BULK, | |
574 | .wMaxPacketSize = __constant_cpu_to_le16 (512), | |
575 | }; | |
576 | ||
577 | static struct usb_endpoint_descriptor | |
578 | hs_sink_desc = { | |
579 | .bLength = USB_DT_ENDPOINT_SIZE, | |
580 | .bDescriptorType = USB_DT_ENDPOINT, | |
581 | ||
582 | .bmAttributes = USB_ENDPOINT_XFER_BULK, | |
583 | .wMaxPacketSize = __constant_cpu_to_le16 (512), | |
584 | }; | |
585 | ||
586 | static struct usb_qualifier_descriptor | |
587 | dev_qualifier = { | |
588 | .bLength = sizeof dev_qualifier, | |
589 | .bDescriptorType = USB_DT_DEVICE_QUALIFIER, | |
590 | ||
591 | .bcdUSB = __constant_cpu_to_le16 (0x0200), | |
592 | .bDeviceClass = USB_CLASS_COMM, | |
593 | ||
594 | .bNumConfigurations = 1, | |
595 | }; | |
596 | ||
597 | static const struct usb_descriptor_header *hs_eth_function [11] = { | |
598 | (struct usb_descriptor_header *) &otg_descriptor, | |
599 | #ifdef DEV_CONFIG_CDC | |
600 | /* "cdc" mode descriptors */ | |
601 | (struct usb_descriptor_header *) &control_intf, | |
602 | (struct usb_descriptor_header *) &header_desc, | |
603 | (struct usb_descriptor_header *) &union_desc, | |
604 | (struct usb_descriptor_header *) ðer_desc, | |
605 | /* NOTE: status endpoint may need to be removed */ | |
606 | (struct usb_descriptor_header *) &hs_status_desc, | |
607 | /* data interface, with altsetting */ | |
608 | (struct usb_descriptor_header *) &data_nop_intf, | |
609 | (struct usb_descriptor_header *) &data_intf, | |
610 | (struct usb_descriptor_header *) &hs_source_desc, | |
611 | (struct usb_descriptor_header *) &hs_sink_desc, | |
612 | NULL, | |
613 | #endif /* DEV_CONFIG_CDC */ | |
614 | }; | |
615 | ||
616 | static inline void hs_subset_descriptors(void) | |
617 | { | |
618 | #ifdef DEV_CONFIG_SUBSET | |
619 | /* behavior is "CDC Subset"; extra descriptors say "SAFE" */ | |
620 | hs_eth_function[1] = (struct usb_descriptor_header *) &subset_data_intf; | |
621 | hs_eth_function[2] = (struct usb_descriptor_header *) &header_desc; | |
622 | hs_eth_function[3] = (struct usb_descriptor_header *) &mdlm_desc; | |
623 | hs_eth_function[4] = (struct usb_descriptor_header *) &mdlm_detail_desc; | |
624 | hs_eth_function[5] = (struct usb_descriptor_header *) ðer_desc; | |
625 | hs_eth_function[6] = (struct usb_descriptor_header *) &hs_source_desc; | |
626 | hs_eth_function[7] = (struct usb_descriptor_header *) &hs_sink_desc; | |
627 | hs_eth_function[8] = NULL; | |
628 | #else | |
629 | hs_eth_function[1] = NULL; | |
630 | #endif | |
631 | } | |
632 | ||
633 | /* maxpacket and other transfer characteristics vary by speed. */ | |
634 | static inline struct usb_endpoint_descriptor * | |
635 | ep_desc(struct usb_gadget *g, struct usb_endpoint_descriptor *hs, | |
636 | struct usb_endpoint_descriptor *fs) | |
637 | { | |
638 | if (gadget_is_dualspeed(g) && g->speed == USB_SPEED_HIGH) | |
639 | return hs; | |
640 | return fs; | |
641 | } | |
642 | ||
643 | ||
644 | /*-------------------------------------------------------------------------*/ | |
645 | ||
646 | /* descriptors that are built on-demand */ | |
647 | ||
648 | static char manufacturer [50]; | |
649 | static char product_desc [40] = DRIVER_DESC; | |
650 | static char serial_number [20]; | |
651 | ||
652 | /* address that the host will use ... usually assigned at random */ | |
653 | static char ethaddr [2 * ETH_ALEN + 1]; | |
654 | ||
655 | /* static strings, in UTF-8 */ | |
656 | static struct usb_string strings [] = { | |
657 | { STRING_MANUFACTURER, manufacturer, }, | |
658 | { STRING_PRODUCT, product_desc, }, | |
659 | { STRING_SERIALNUMBER, serial_number, }, | |
660 | { STRING_DATA, "Ethernet Data", }, | |
661 | { STRING_ETHADDR, ethaddr, }, | |
662 | #ifdef DEV_CONFIG_CDC | |
663 | { STRING_CDC, "CDC Ethernet", }, | |
664 | { STRING_CONTROL, "CDC Communications Control", }, | |
665 | #endif | |
666 | #ifdef DEV_CONFIG_SUBSET | |
667 | { STRING_SUBSET, "CDC Ethernet Subset", }, | |
668 | #endif | |
669 | { } /* end of list */ | |
670 | }; | |
671 | ||
672 | static struct usb_gadget_strings stringtab = { | |
673 | .language = 0x0409, /* en-us */ | |
674 | .strings = strings, | |
675 | }; | |
676 | ||
677 | ||
678 | /*============================================================================*/ | |
679 | static u8 control_req[USB_BUFSIZ]; | |
680 | static u8 status_req[STATUS_BYTECOUNT]; | |
681 | ||
682 | ||
683 | ||
684 | /** | |
685 | * strlcpy - Copy a %NUL terminated string into a sized buffer | |
686 | * @dest: Where to copy the string to | |
687 | * @src: Where to copy the string from | |
688 | * @size: size of destination buffer | |
689 | * | |
690 | * Compatible with *BSD: the result is always a valid | |
691 | * NUL-terminated string that fits in the buffer (unless, | |
692 | * of course, the buffer size is zero). It does not pad | |
693 | * out the result like strncpy() does. | |
694 | */ | |
695 | size_t strlcpy(char *dest, const char *src, size_t size) | |
696 | { | |
697 | size_t ret = strlen(src); | |
698 | ||
699 | if (size) { | |
700 | size_t len = (ret >= size) ? size - 1 : ret; | |
701 | memcpy(dest, src, len); | |
702 | dest[len] = '\0'; | |
703 | } | |
704 | return ret; | |
705 | } | |
706 | ||
707 | ||
708 | /*============================================================================*/ | |
709 | ||
710 | /* | |
711 | * one config, two interfaces: control, data. | |
712 | * complications: class descriptors, and an altsetting. | |
713 | */ | |
714 | static int | |
715 | config_buf(struct usb_gadget *g, u8 *buf, u8 type, unsigned index, int is_otg) | |
716 | { | |
717 | int len; | |
718 | const struct usb_config_descriptor *config; | |
719 | const struct usb_descriptor_header **function; | |
720 | int hs = 0; | |
721 | ||
722 | if (gadget_is_dualspeed(g)) { | |
723 | hs = (g->speed == USB_SPEED_HIGH); | |
724 | if (type == USB_DT_OTHER_SPEED_CONFIG) | |
725 | hs = !hs; | |
726 | } | |
727 | #define which_fn(t) (hs ? hs_ ## t ## _function : fs_ ## t ## _function) | |
728 | ||
729 | if (index >= device_desc.bNumConfigurations) | |
730 | return -EINVAL; | |
731 | ||
732 | config = ð_config; | |
733 | function = which_fn (eth); | |
734 | ||
735 | /* for now, don't advertise srp-only devices */ | |
736 | if (!is_otg) | |
737 | function++; | |
738 | ||
739 | len = usb_gadget_config_buf (config, buf, USB_BUFSIZ, function); | |
740 | if (len < 0) | |
741 | return len; | |
742 | ((struct usb_config_descriptor *) buf)->bDescriptorType = type; | |
743 | return len; | |
744 | } | |
745 | ||
746 | /*-------------------------------------------------------------------------*/ | |
747 | ||
748 | static int alloc_requests (struct eth_dev *dev, unsigned n, gfp_t gfp_flags); | |
749 | ||
750 | static int | |
751 | set_ether_config (struct eth_dev *dev, gfp_t gfp_flags) | |
752 | { | |
753 | int result = 0; | |
754 | struct usb_gadget *gadget = dev->gadget; | |
755 | ||
756 | #if defined(DEV_CONFIG_CDC) | |
757 | /* status endpoint used for (optionally) CDC */ | |
758 | if (!subset_active(dev) && dev->status_ep) { | |
759 | dev->status = ep_desc (gadget, &hs_status_desc, | |
760 | &fs_status_desc); | |
761 | dev->status_ep->driver_data = dev; | |
762 | ||
763 | result = usb_ep_enable (dev->status_ep, dev->status); | |
764 | if (result != 0) { | |
7de73185 | 765 | debug("enable %s --> %d\n", |
23cd1385 RB |
766 | dev->status_ep->name, result); |
767 | goto done; | |
768 | } | |
769 | } | |
770 | #endif | |
771 | ||
772 | dev->in = ep_desc(gadget, &hs_source_desc, &fs_source_desc); | |
773 | dev->in_ep->driver_data = dev; | |
774 | ||
775 | dev->out = ep_desc(gadget, &hs_sink_desc, &fs_sink_desc); | |
776 | dev->out_ep->driver_data = dev; | |
777 | ||
778 | /* With CDC, the host isn't allowed to use these two data | |
779 | * endpoints in the default altsetting for the interface. | |
780 | * so we don't activate them yet. Reset from SET_INTERFACE. | |
781 | */ | |
782 | if (!cdc_active(dev)) { | |
783 | result = usb_ep_enable (dev->in_ep, dev->in); | |
784 | if (result != 0) { | |
7de73185 | 785 | debug("enable %s --> %d\n", |
23cd1385 RB |
786 | dev->in_ep->name, result); |
787 | goto done; | |
788 | } | |
789 | ||
790 | result = usb_ep_enable (dev->out_ep, dev->out); | |
791 | if (result != 0) { | |
7de73185 | 792 | debug("enable %s --> %d\n", |
23cd1385 RB |
793 | dev->out_ep->name, result); |
794 | goto done; | |
795 | } | |
796 | } | |
797 | ||
798 | done: | |
799 | if (result == 0) | |
800 | result = alloc_requests (dev, qlen (gadget), gfp_flags); | |
801 | ||
802 | /* on error, disable any endpoints */ | |
803 | if (result < 0) { | |
804 | if (!subset_active(dev)) | |
805 | (void) usb_ep_disable (dev->status_ep); | |
806 | dev->status = NULL; | |
807 | (void) usb_ep_disable (dev->in_ep); | |
808 | (void) usb_ep_disable (dev->out_ep); | |
809 | dev->in = NULL; | |
810 | dev->out = NULL; | |
811 | } | |
812 | ||
813 | /* caller is responsible for cleanup on error */ | |
814 | return result; | |
815 | } | |
816 | ||
817 | ||
818 | static void eth_reset_config (struct eth_dev *dev) | |
819 | { | |
820 | if (dev->config == 0) | |
821 | return; | |
822 | ||
7de73185 VK |
823 | debug("%s\n", __func__); |
824 | ||
23cd1385 RB |
825 | /* disable endpoints, forcing (synchronous) completion of |
826 | * pending i/o. then free the requests. | |
827 | */ | |
828 | ||
829 | if (dev->in) { | |
830 | usb_ep_disable (dev->in_ep); | |
831 | if (dev->tx_req) { | |
832 | usb_ep_free_request (dev->in_ep, dev->tx_req); | |
833 | dev->tx_req=NULL; | |
834 | } | |
835 | } | |
836 | if (dev->out) { | |
837 | usb_ep_disable (dev->out_ep); | |
838 | if (dev->rx_req) { | |
0129e327 | 839 | usb_ep_free_request (dev->out_ep, dev->rx_req); |
23cd1385 RB |
840 | dev->rx_req=NULL; |
841 | } | |
842 | } | |
843 | if (dev->status) { | |
844 | usb_ep_disable (dev->status_ep); | |
845 | } | |
846 | dev->cdc_filter = 0; | |
847 | dev->config = 0; | |
848 | } | |
849 | ||
850 | /* change our operational config. must agree with the code | |
851 | * that returns config descriptors, and altsetting code. | |
852 | */ | |
853 | static int eth_set_config (struct eth_dev *dev, unsigned number, gfp_t gfp_flags) | |
854 | { | |
855 | int result = 0; | |
856 | struct usb_gadget *gadget = dev->gadget; | |
857 | ||
858 | if (gadget_is_sa1100 (gadget) | |
859 | && dev->config | |
860 | && dev->tx_qlen != 0) { | |
861 | /* tx fifo is full, but we can't clear it...*/ | |
7de73185 | 862 | error("can't change configurations"); |
23cd1385 RB |
863 | return -ESPIPE; |
864 | } | |
865 | eth_reset_config (dev); | |
866 | ||
867 | switch (number) { | |
868 | case DEV_CONFIG_VALUE: | |
869 | result = set_ether_config (dev, gfp_flags); | |
870 | break; | |
871 | default: | |
872 | result = -EINVAL; | |
873 | /* FALL THROUGH */ | |
874 | case 0: | |
875 | break; | |
876 | } | |
877 | ||
878 | if (result) { | |
879 | if (number) | |
880 | eth_reset_config (dev); | |
881 | usb_gadget_vbus_draw(dev->gadget, | |
882 | gadget_is_otg(dev->gadget) ? 8 : 100); | |
883 | } else { | |
884 | char *speed; | |
885 | unsigned power; | |
886 | ||
887 | power = 2 * eth_config.bMaxPower; | |
888 | usb_gadget_vbus_draw(dev->gadget, power); | |
889 | ||
890 | switch (gadget->speed) { | |
891 | case USB_SPEED_FULL: speed = "full"; break; | |
892 | #ifdef CONFIG_USB_GADGET_DUALSPEED | |
893 | case USB_SPEED_HIGH: speed = "high"; break; | |
894 | #endif | |
895 | default: speed = "?"; break; | |
896 | } | |
897 | ||
898 | dev->config = number; | |
7de73185 | 899 | printf("%s speed config #%d: %d mA, %s, using %s\n", |
23cd1385 RB |
900 | speed, number, power, driver_desc, |
901 | (cdc_active(dev)? "CDC Ethernet" | |
902 | : "CDC Ethernet Subset")); | |
903 | } | |
904 | return result; | |
905 | } | |
906 | ||
907 | /*-------------------------------------------------------------------------*/ | |
908 | ||
909 | #ifdef DEV_CONFIG_CDC | |
910 | ||
911 | /* The interrupt endpoint is used in CDC networking models (Ethernet, ATM) | |
912 | * only to notify the host about link status changes (which we support) or | |
913 | * report completion of some encapsulated command. Since | |
914 | * we want this CDC Ethernet code to be vendor-neutral, we don't use that | |
915 | * command mechanism; and only one status request is ever queued. | |
916 | */ | |
917 | static void eth_status_complete (struct usb_ep *ep, struct usb_request *req) | |
918 | { | |
919 | struct usb_cdc_notification *event = req->buf; | |
920 | int value = req->status; | |
921 | struct eth_dev *dev = ep->driver_data; | |
922 | ||
923 | /* issue the second notification if host reads the first */ | |
924 | if (event->bNotificationType == USB_CDC_NOTIFY_NETWORK_CONNECTION | |
925 | && value == 0) { | |
926 | __le32 *data = req->buf + sizeof *event; | |
927 | ||
928 | event->bmRequestType = 0xA1; | |
929 | event->bNotificationType = USB_CDC_NOTIFY_SPEED_CHANGE; | |
930 | event->wValue = __constant_cpu_to_le16 (0); | |
931 | event->wIndex = __constant_cpu_to_le16 (1); | |
932 | event->wLength = __constant_cpu_to_le16 (8); | |
933 | ||
934 | /* SPEED_CHANGE data is up/down speeds in bits/sec */ | |
935 | data [0] = data [1] = cpu_to_le32 (BITRATE (dev->gadget)); | |
936 | ||
937 | req->length = STATUS_BYTECOUNT; | |
938 | value = usb_ep_queue (ep, req, GFP_ATOMIC); | |
7de73185 | 939 | debug("send SPEED_CHANGE --> %d\n", value); |
23cd1385 RB |
940 | if (value == 0) |
941 | return; | |
942 | } else if (value != -ECONNRESET) { | |
7de73185 | 943 | debug("event %02x --> %d\n", |
23cd1385 RB |
944 | event->bNotificationType, value); |
945 | if (event->bNotificationType== | |
946 | USB_CDC_NOTIFY_SPEED_CHANGE) | |
947 | { | |
948 | l_ethdev.network_started=1; | |
949 | printf("USB network up!\n"); | |
950 | } | |
951 | } | |
952 | req->context = NULL; | |
953 | } | |
954 | ||
955 | static void issue_start_status (struct eth_dev *dev) | |
956 | { | |
957 | struct usb_request *req = dev->stat_req; | |
958 | struct usb_cdc_notification *event; | |
959 | int value; | |
960 | ||
961 | /* flush old status | |
962 | * | |
963 | * FIXME ugly idiom, maybe we'd be better with just | |
964 | * a "cancel the whole queue" primitive since any | |
965 | * unlink-one primitive has way too many error modes. | |
966 | * here, we "know" toggle is already clear... | |
967 | * | |
968 | * FIXME iff req->context != null just dequeue it | |
969 | */ | |
970 | usb_ep_disable (dev->status_ep); | |
971 | usb_ep_enable (dev->status_ep, dev->status); | |
972 | ||
973 | /* 3.8.1 says to issue first NETWORK_CONNECTION, then | |
974 | * a SPEED_CHANGE. could be useful in some configs. | |
975 | */ | |
976 | event = req->buf; | |
977 | event->bmRequestType = 0xA1; | |
978 | event->bNotificationType = USB_CDC_NOTIFY_NETWORK_CONNECTION; | |
979 | event->wValue = __constant_cpu_to_le16 (1); /* connected */ | |
980 | event->wIndex = __constant_cpu_to_le16 (1); | |
981 | event->wLength = 0; | |
982 | ||
983 | req->length = sizeof *event; | |
984 | req->complete = eth_status_complete; | |
985 | req->context = dev; | |
986 | ||
987 | value = usb_ep_queue (dev->status_ep, req, GFP_ATOMIC); | |
988 | if (value < 0) | |
7de73185 | 989 | debug("status buf queue --> %d\n", value); |
23cd1385 RB |
990 | } |
991 | ||
992 | #endif | |
993 | ||
994 | /*-------------------------------------------------------------------------*/ | |
995 | ||
996 | static void eth_setup_complete (struct usb_ep *ep, struct usb_request *req) | |
997 | { | |
998 | if (req->status || req->actual != req->length) | |
7de73185 | 999 | debug("setup complete --> %d, %d/%d\n", |
23cd1385 RB |
1000 | req->status, req->actual, req->length); |
1001 | } | |
1002 | ||
1003 | /* | |
1004 | * The setup() callback implements all the ep0 functionality that's not | |
1005 | * handled lower down. CDC has a number of less-common features: | |
1006 | * | |
1007 | * - two interfaces: control, and ethernet data | |
1008 | * - Ethernet data interface has two altsettings: default, and active | |
1009 | * - class-specific descriptors for the control interface | |
1010 | * - class-specific control requests | |
1011 | */ | |
1012 | static int | |
1013 | eth_setup (struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl) | |
1014 | { | |
1015 | struct eth_dev *dev = get_gadget_data (gadget); | |
1016 | struct usb_request *req = dev->req; | |
1017 | int value = -EOPNOTSUPP; | |
1018 | u16 wIndex = le16_to_cpu(ctrl->wIndex); | |
1019 | u16 wValue = le16_to_cpu(ctrl->wValue); | |
1020 | u16 wLength = le16_to_cpu(ctrl->wLength); | |
1021 | ||
1022 | /* descriptors just go into the pre-allocated ep0 buffer, | |
1023 | * while config change events may enable network traffic. | |
1024 | */ | |
1025 | ||
7de73185 | 1026 | debug("%s\n", __func__); |
23cd1385 RB |
1027 | |
1028 | req->complete = eth_setup_complete; | |
1029 | switch (ctrl->bRequest) { | |
1030 | ||
1031 | case USB_REQ_GET_DESCRIPTOR: | |
1032 | if (ctrl->bRequestType != USB_DIR_IN) | |
1033 | break; | |
1034 | switch (wValue >> 8) { | |
1035 | ||
1036 | case USB_DT_DEVICE: | |
1037 | value = min (wLength, (u16) sizeof device_desc); | |
1038 | memcpy (req->buf, &device_desc, value); | |
1039 | break; | |
1040 | case USB_DT_DEVICE_QUALIFIER: | |
1041 | if (!gadget_is_dualspeed(gadget)) | |
1042 | break; | |
1043 | value = min (wLength, (u16) sizeof dev_qualifier); | |
1044 | memcpy (req->buf, &dev_qualifier, value); | |
1045 | break; | |
1046 | ||
1047 | case USB_DT_OTHER_SPEED_CONFIG: | |
1048 | if (!gadget_is_dualspeed(gadget)) | |
1049 | break; | |
1050 | /* FALLTHROUGH */ | |
1051 | case USB_DT_CONFIG: | |
1052 | value = config_buf(gadget, req->buf, | |
1053 | wValue >> 8, | |
1054 | wValue & 0xff, | |
1055 | gadget_is_otg(gadget)); | |
1056 | if (value >= 0) | |
1057 | value = min (wLength, (u16) value); | |
1058 | break; | |
1059 | ||
1060 | case USB_DT_STRING: | |
1061 | value = usb_gadget_get_string (&stringtab, | |
1062 | wValue & 0xff, req->buf); | |
1063 | ||
1064 | if (value >= 0) | |
1065 | value = min (wLength, (u16) value); | |
1066 | ||
1067 | break; | |
1068 | } | |
1069 | break; | |
1070 | ||
1071 | case USB_REQ_SET_CONFIGURATION: | |
1072 | if (ctrl->bRequestType != 0) | |
1073 | break; | |
1074 | if (gadget->a_hnp_support) | |
7de73185 | 1075 | debug("HNP available\n"); |
23cd1385 | 1076 | else if (gadget->a_alt_hnp_support) |
7de73185 | 1077 | debug("HNP needs a different root port\n"); |
23cd1385 RB |
1078 | value = eth_set_config (dev, wValue, GFP_ATOMIC); |
1079 | break; | |
1080 | case USB_REQ_GET_CONFIGURATION: | |
1081 | if (ctrl->bRequestType != USB_DIR_IN) | |
1082 | break; | |
1083 | *(u8 *)req->buf = dev->config; | |
1084 | value = min (wLength, (u16) 1); | |
1085 | break; | |
1086 | ||
1087 | case USB_REQ_SET_INTERFACE: | |
1088 | if (ctrl->bRequestType != USB_RECIP_INTERFACE | |
1089 | || !dev->config | |
1090 | || wIndex > 1) | |
1091 | break; | |
1092 | if (!cdc_active(dev) && wIndex != 0) | |
1093 | break; | |
1094 | ||
1095 | /* PXA hardware partially handles SET_INTERFACE; | |
1096 | * we need to kluge around that interference. | |
1097 | */ | |
1098 | if (gadget_is_pxa (gadget)) { | |
1099 | value = eth_set_config (dev, DEV_CONFIG_VALUE, | |
1100 | GFP_ATOMIC); | |
1101 | goto done_set_intf; | |
1102 | } | |
1103 | ||
1104 | #ifdef DEV_CONFIG_CDC | |
1105 | switch (wIndex) { | |
1106 | case 0: /* control/master intf */ | |
1107 | if (wValue != 0) | |
1108 | break; | |
1109 | if (dev->status) { | |
1110 | usb_ep_disable (dev->status_ep); | |
1111 | usb_ep_enable (dev->status_ep, dev->status); | |
1112 | } | |
1113 | value = 0; | |
1114 | break; | |
1115 | case 1: /* data intf */ | |
1116 | if (wValue > 1) | |
1117 | break; | |
1118 | usb_ep_disable (dev->in_ep); | |
1119 | usb_ep_disable (dev->out_ep); | |
1120 | ||
1121 | /* CDC requires the data transfers not be done from | |
1122 | * the default interface setting ... also, setting | |
1123 | * the non-default interface resets filters etc. | |
1124 | */ | |
1125 | if (wValue == 1) { | |
1126 | if (!cdc_active (dev)) | |
1127 | break; | |
1128 | usb_ep_enable (dev->in_ep, dev->in); | |
1129 | usb_ep_enable (dev->out_ep, dev->out); | |
1130 | dev->cdc_filter = DEFAULT_FILTER; | |
1131 | if (dev->status) | |
1132 | issue_start_status (dev); | |
1133 | } | |
1134 | ||
1135 | value = 0; | |
1136 | break; | |
1137 | } | |
1138 | #else | |
1139 | /* FIXME this is wrong, as is the assumption that | |
1140 | * all non-PXA hardware talks real CDC ... | |
1141 | */ | |
7de73185 | 1142 | debug("set_interface ignored!\n"); |
23cd1385 RB |
1143 | #endif /* DEV_CONFIG_CDC */ |
1144 | ||
1145 | done_set_intf: | |
1146 | break; | |
1147 | case USB_REQ_GET_INTERFACE: | |
1148 | if (ctrl->bRequestType != (USB_DIR_IN|USB_RECIP_INTERFACE) | |
1149 | || !dev->config | |
1150 | || wIndex > 1) | |
1151 | break; | |
1152 | if (!(cdc_active(dev)) && wIndex != 0) | |
1153 | break; | |
1154 | ||
1155 | /* for CDC, iff carrier is on, data interface is active. */ | |
1156 | if (wIndex != 1) | |
1157 | *(u8 *)req->buf = 0; | |
1158 | else { | |
1159 | /* *(u8 *)req->buf = netif_carrier_ok (dev->net) ? 1 : 0; */ | |
1160 | /* carrier always ok ...*/ | |
1161 | *(u8 *)req->buf = 1 ; | |
1162 | } | |
1163 | value = min (wLength, (u16) 1); | |
1164 | break; | |
1165 | ||
1166 | #ifdef DEV_CONFIG_CDC | |
1167 | case USB_CDC_SET_ETHERNET_PACKET_FILTER: | |
1168 | /* see 6.2.30: no data, wIndex = interface, | |
1169 | * wValue = packet filter bitmap | |
1170 | */ | |
1171 | if (ctrl->bRequestType != (USB_TYPE_CLASS|USB_RECIP_INTERFACE) | |
1172 | || !cdc_active(dev) | |
1173 | || wLength != 0 | |
1174 | || wIndex > 1) | |
1175 | break; | |
7de73185 | 1176 | debug("packet filter %02x\n", wValue); |
23cd1385 RB |
1177 | dev->cdc_filter = wValue; |
1178 | value = 0; | |
1179 | break; | |
1180 | ||
1181 | /* and potentially: | |
1182 | * case USB_CDC_SET_ETHERNET_MULTICAST_FILTERS: | |
1183 | * case USB_CDC_SET_ETHERNET_PM_PATTERN_FILTER: | |
1184 | * case USB_CDC_GET_ETHERNET_PM_PATTERN_FILTER: | |
1185 | * case USB_CDC_GET_ETHERNET_STATISTIC: | |
1186 | */ | |
1187 | ||
1188 | #endif /* DEV_CONFIG_CDC */ | |
1189 | ||
1190 | default: | |
7de73185 | 1191 | debug("unknown control req%02x.%02x v%04x i%04x l%d\n", |
23cd1385 RB |
1192 | ctrl->bRequestType, ctrl->bRequest, |
1193 | wValue, wIndex, wLength); | |
1194 | } | |
1195 | ||
1196 | /* respond with data transfer before status phase? */ | |
1197 | if (value >= 0) { | |
7de73185 | 1198 | debug("respond with data transfer before status phase\n"); |
23cd1385 RB |
1199 | req->length = value; |
1200 | req->zero = value < wLength | |
1201 | && (value % gadget->ep0->maxpacket) == 0; | |
1202 | value = usb_ep_queue (gadget->ep0, req, GFP_ATOMIC); | |
1203 | if (value < 0) { | |
7de73185 | 1204 | debug("ep_queue --> %d\n", value); |
23cd1385 RB |
1205 | req->status = 0; |
1206 | eth_setup_complete (gadget->ep0, req); | |
1207 | } | |
1208 | } | |
1209 | ||
1210 | /* host either stalls (value < 0) or reports success */ | |
1211 | return value; | |
1212 | } | |
1213 | ||
1214 | ||
1215 | /*-------------------------------------------------------------------------*/ | |
1216 | ||
1217 | static void rx_complete (struct usb_ep *ep, struct usb_request *req); | |
1218 | ||
1219 | static int rx_submit ( struct eth_dev *dev, struct usb_request *req, \ | |
1220 | gfp_t gfp_flags) | |
1221 | { | |
1222 | int retval = -ENOMEM; | |
1223 | size_t size; | |
1224 | ||
1225 | /* Padding up to RX_EXTRA handles minor disagreements with host. | |
1226 | * Normally we use the USB "terminate on short read" convention; | |
1227 | * so allow up to (N*maxpacket), since that memory is normally | |
1228 | * already allocated. Some hardware doesn't deal well with short | |
1229 | * reads (e.g. DMA must be N*maxpacket), so for now don't trim a | |
1230 | * byte off the end (to force hardware errors on overflow). | |
1231 | */ | |
1232 | ||
7de73185 | 1233 | debug("%s\n", __func__); |
23cd1385 RB |
1234 | |
1235 | size = (ETHER_HDR_SIZE + dev->mtu + RX_EXTRA); | |
1236 | size += dev->out_ep->maxpacket - 1; | |
1237 | size -= size % dev->out_ep->maxpacket; | |
1238 | ||
1239 | ||
1240 | /* Some platforms perform better when IP packets are aligned, | |
1241 | * but on at least one, checksumming fails otherwise. | |
1242 | */ | |
1243 | ||
1244 | req->buf = (u8 *) NetRxPackets[0]; | |
1245 | req->length = size; | |
1246 | req->complete = rx_complete; | |
1247 | ||
1248 | retval = usb_ep_queue (dev->out_ep, req, gfp_flags); | |
1249 | ||
1250 | if (retval) { | |
7de73185 | 1251 | error("rx submit --> %d", retval); |
23cd1385 RB |
1252 | } |
1253 | return retval; | |
1254 | } | |
1255 | ||
1256 | ||
1257 | static void rx_complete (struct usb_ep *ep, struct usb_request *req) | |
1258 | { | |
1259 | struct eth_dev *dev = ep->driver_data; | |
1260 | ||
7de73185 | 1261 | debug("%s: status %d\n", __func__, req->status); |
23cd1385 RB |
1262 | |
1263 | packet_received=1; | |
1264 | ||
1265 | if (req) | |
1266 | dev->rx_req=req; | |
1267 | } | |
1268 | ||
1269 | ||
1270 | static int alloc_requests (struct eth_dev *dev, unsigned n, gfp_t gfp_flags) | |
1271 | { | |
1272 | ||
1273 | dev->tx_req = usb_ep_alloc_request (dev->in_ep, 0); | |
1274 | ||
1275 | if (!dev->tx_req) | |
1276 | goto fail; | |
1277 | ||
1278 | dev->rx_req = usb_ep_alloc_request (dev->out_ep, 0); | |
1279 | ||
1280 | if (!dev->rx_req) | |
1281 | goto fail; | |
1282 | ||
1283 | return 0; | |
1284 | ||
1285 | fail: | |
7de73185 | 1286 | error("can't alloc requests"); |
23cd1385 RB |
1287 | return -1; |
1288 | } | |
1289 | ||
1290 | ||
1291 | static void tx_complete (struct usb_ep *ep, struct usb_request *req) | |
1292 | { | |
7de73185 | 1293 | debug("%s: status %s\n", __func__, (req->status)?"failed":"ok"); |
23cd1385 RB |
1294 | packet_sent=1; |
1295 | } | |
1296 | ||
1297 | static inline int eth_is_promisc (struct eth_dev *dev) | |
1298 | { | |
1299 | /* no filters for the CDC subset; always promisc */ | |
1300 | if (subset_active (dev)) | |
1301 | return 1; | |
1302 | return dev->cdc_filter & USB_CDC_PACKET_TYPE_PROMISCUOUS; | |
1303 | } | |
1304 | ||
1305 | #if 0 | |
1306 | static int eth_start_xmit (struct sk_buff *skb, struct net_device *net) | |
1307 | { | |
1308 | struct eth_dev *dev = netdev_priv(net); | |
1309 | int length = skb->len; | |
1310 | int retval; | |
1311 | struct usb_request *req = NULL; | |
1312 | unsigned long flags; | |
1313 | ||
1314 | /* apply outgoing CDC or RNDIS filters */ | |
1315 | if (!eth_is_promisc (dev)) { | |
1316 | u8 *dest = skb->data; | |
1317 | ||
1318 | if (is_multicast_ether_addr(dest)) { | |
1319 | u16 type; | |
1320 | ||
1321 | /* ignores USB_CDC_PACKET_TYPE_MULTICAST and host | |
1322 | * SET_ETHERNET_MULTICAST_FILTERS requests | |
1323 | */ | |
1324 | if (is_broadcast_ether_addr(dest)) | |
1325 | type = USB_CDC_PACKET_TYPE_BROADCAST; | |
1326 | else | |
1327 | type = USB_CDC_PACKET_TYPE_ALL_MULTICAST; | |
1328 | if (!(dev->cdc_filter & type)) { | |
1329 | dev_kfree_skb_any (skb); | |
1330 | return 0; | |
1331 | } | |
1332 | } | |
1333 | /* ignores USB_CDC_PACKET_TYPE_DIRECTED */ | |
1334 | } | |
1335 | ||
1336 | spin_lock_irqsave(&dev->req_lock, flags); | |
1337 | /* | |
1338 | * this freelist can be empty if an interrupt triggered disconnect() | |
1339 | * and reconfigured the gadget (shutting down this queue) after the | |
1340 | * network stack decided to xmit but before we got the spinlock. | |
1341 | */ | |
1342 | if (list_empty(&dev->tx_reqs)) { | |
1343 | spin_unlock_irqrestore(&dev->req_lock, flags); | |
1344 | return 1; | |
1345 | } | |
1346 | ||
1347 | req = container_of (dev->tx_reqs.next, struct usb_request, list); | |
1348 | list_del (&req->list); | |
1349 | ||
1350 | /* temporarily stop TX queue when the freelist empties */ | |
1351 | if (list_empty (&dev->tx_reqs)) | |
1352 | netif_stop_queue (net); | |
1353 | spin_unlock_irqrestore(&dev->req_lock, flags); | |
1354 | ||
1355 | /* no buffer copies needed, unless the network stack did it | |
1356 | * or the hardware can't use skb buffers. | |
1357 | * or there's not enough space for any RNDIS headers we need | |
1358 | */ | |
1359 | if (rndis_active(dev)) { | |
1360 | struct sk_buff *skb_rndis; | |
1361 | ||
1362 | skb_rndis = skb_realloc_headroom (skb, | |
1363 | sizeof (struct rndis_packet_msg_type)); | |
1364 | if (!skb_rndis) | |
1365 | goto drop; | |
1366 | ||
1367 | dev_kfree_skb_any (skb); | |
1368 | skb = skb_rndis; | |
1369 | rndis_add_hdr (skb); | |
1370 | length = skb->len; | |
1371 | } | |
1372 | req->buf = skb->data; | |
1373 | req->context = skb; | |
1374 | req->complete = tx_complete; | |
1375 | ||
1376 | /* use zlp framing on tx for strict CDC-Ether conformance, | |
1377 | * though any robust network rx path ignores extra padding. | |
1378 | * and some hardware doesn't like to write zlps. | |
1379 | */ | |
1380 | req->zero = 1; | |
1381 | if (!dev->zlp && (length % dev->in_ep->maxpacket) == 0) | |
1382 | length++; | |
1383 | ||
1384 | req->length = length; | |
1385 | ||
1386 | /* throttle highspeed IRQ rate back slightly */ | |
1387 | if (gadget_is_dualspeed(dev->gadget)) | |
1388 | req->no_interrupt = (dev->gadget->speed == USB_SPEED_HIGH) | |
1389 | ? ((atomic_read(&dev->tx_qlen) % qmult) != 0) | |
1390 | : 0; | |
1391 | ||
1392 | retval = usb_ep_queue (dev->in_ep, req, GFP_ATOMIC); | |
1393 | switch (retval) { | |
1394 | default: | |
1395 | DEBUG (dev, "tx queue err %d\n", retval); | |
1396 | break; | |
1397 | case 0: | |
1398 | net->trans_start = jiffies; | |
1399 | atomic_inc (&dev->tx_qlen); | |
1400 | } | |
1401 | ||
1402 | if (retval) { | |
1403 | drop: | |
1404 | dev->stats.tx_dropped++; | |
1405 | dev_kfree_skb_any (skb); | |
1406 | spin_lock_irqsave(&dev->req_lock, flags); | |
1407 | if (list_empty (&dev->tx_reqs)) | |
1408 | netif_start_queue (net); | |
1409 | list_add (&req->list, &dev->tx_reqs); | |
1410 | spin_unlock_irqrestore(&dev->req_lock, flags); | |
1411 | } | |
1412 | return 0; | |
1413 | } | |
1414 | ||
1415 | /*-------------------------------------------------------------------------*/ | |
1416 | #endif | |
1417 | ||
1418 | static void eth_unbind (struct usb_gadget *gadget) | |
1419 | { | |
1420 | struct eth_dev *dev = get_gadget_data (gadget); | |
1421 | ||
7de73185 | 1422 | debug("%s...\n", __func__); |
23cd1385 | 1423 | |
0129e327 VK |
1424 | /* we've already been disconnected ... no i/o is active */ |
1425 | if (dev->req) { | |
1426 | usb_ep_free_request (gadget->ep0, dev->req); | |
1427 | dev->req = NULL; | |
1428 | } | |
23cd1385 RB |
1429 | if (dev->stat_req) { |
1430 | usb_ep_free_request (dev->status_ep, dev->stat_req); | |
1431 | dev->stat_req = NULL; | |
1432 | } | |
1433 | ||
1434 | if (dev->tx_req) { | |
1435 | usb_ep_free_request (dev->in_ep, dev->tx_req); | |
1436 | dev->tx_req=NULL; | |
1437 | } | |
1438 | ||
1439 | if (dev->rx_req) { | |
0129e327 | 1440 | usb_ep_free_request (dev->out_ep, dev->rx_req); |
23cd1385 RB |
1441 | dev->rx_req=NULL; |
1442 | } | |
1443 | ||
1444 | /* unregister_netdev (dev->net);*/ | |
1445 | /* free_netdev(dev->net);*/ | |
1446 | ||
1447 | set_gadget_data (gadget, NULL); | |
1448 | } | |
1449 | ||
1450 | static void eth_disconnect (struct usb_gadget *gadget) | |
1451 | { | |
1452 | eth_reset_config (get_gadget_data (gadget)); | |
1453 | } | |
1454 | ||
1455 | static void eth_suspend (struct usb_gadget *gadget) | |
1456 | { | |
1457 | /* Not used */ | |
1458 | } | |
1459 | ||
1460 | static void eth_resume (struct usb_gadget *gadget) | |
1461 | { | |
1462 | /* Not used */ | |
1463 | } | |
1464 | ||
1465 | /*-------------------------------------------------------------------------*/ | |
1466 | ||
1467 | static int is_eth_addr_valid(char *str) | |
1468 | { | |
1469 | if (strlen(str) == 17) { | |
1470 | int i; | |
1471 | char *p, *q; | |
1472 | uchar ea[6]; | |
1473 | ||
1474 | /* see if it looks like an ethernet address */ | |
1475 | ||
1476 | p = str; | |
1477 | ||
1478 | for (i = 0; i < 6; i++) { | |
1479 | char term = (i == 5 ? '\0' : ':'); | |
1480 | ||
1481 | ea[i] = simple_strtol(p, &q, 16); | |
1482 | ||
1483 | if ((q - p) != 2 || *q++ != term) | |
1484 | break; | |
1485 | ||
1486 | p = q; | |
1487 | } | |
1488 | ||
1489 | if (i == 6) /* it looks ok */ | |
1490 | return 1; | |
1491 | } | |
1492 | return 0; | |
1493 | } | |
1494 | ||
1495 | static u8 nibble (unsigned char c) | |
1496 | { | |
1497 | if (likely (isdigit (c))) | |
1498 | return c - '0'; | |
1499 | c = toupper (c); | |
1500 | if (likely (isxdigit (c))) | |
1501 | return 10 + c - 'A'; | |
1502 | return 0; | |
1503 | } | |
1504 | ||
1505 | static int get_ether_addr(const char *str, u8 *dev_addr) | |
1506 | { | |
1507 | if (str) { | |
1508 | unsigned i; | |
1509 | ||
1510 | for (i = 0; i < 6; i++) { | |
1511 | unsigned char num; | |
1512 | ||
1513 | if((*str == '.') || (*str == ':')) | |
1514 | str++; | |
1515 | num = nibble(*str++) << 4; | |
1516 | num |= (nibble(*str++)); | |
1517 | dev_addr [i] = num; | |
1518 | } | |
1519 | if (is_valid_ether_addr (dev_addr)) | |
1520 | return 0; | |
1521 | } | |
1522 | return 1; | |
1523 | } | |
1524 | ||
1525 | static int eth_bind(struct usb_gadget *gadget) | |
1526 | { | |
1527 | struct eth_dev *dev = &l_ethdev; | |
1528 | u8 cdc = 1, zlp = 1; | |
1529 | struct usb_ep *in_ep, *out_ep, *status_ep = NULL; | |
1530 | int gcnum; | |
1531 | u8 tmp[7]; | |
1532 | ||
1533 | /* these flags are only ever cleared; compiler take note */ | |
1534 | #ifndef DEV_CONFIG_CDC | |
1535 | cdc = 0; | |
1536 | #endif | |
1537 | /* Because most host side USB stacks handle CDC Ethernet, that | |
1538 | * standard protocol is _strongly_ preferred for interop purposes. | |
1539 | * (By everyone except Microsoft.) | |
1540 | */ | |
1541 | if (gadget_is_pxa (gadget)) { | |
1542 | /* pxa doesn't support altsettings */ | |
1543 | cdc = 0; | |
1544 | } else if (gadget_is_musbhdrc(gadget)) { | |
1545 | /* reduce tx dma overhead by avoiding special cases */ | |
1546 | zlp = 0; | |
1547 | } else if (gadget_is_sh(gadget)) { | |
1548 | /* sh doesn't support multiple interfaces or configs */ | |
1549 | cdc = 0; | |
1550 | } else if (gadget_is_sa1100 (gadget)) { | |
1551 | /* hardware can't write zlps */ | |
1552 | zlp = 0; | |
1553 | /* sa1100 CAN do CDC, without status endpoint ... we use | |
1554 | * non-CDC to be compatible with ARM Linux-2.4 "usb-eth". | |
1555 | */ | |
1556 | cdc = 0; | |
1557 | } | |
1558 | ||
1559 | gcnum = usb_gadget_controller_number (gadget); | |
1560 | if (gcnum >= 0) | |
1561 | device_desc.bcdDevice = cpu_to_le16 (0x0300 + gcnum); | |
1562 | else { | |
1563 | /* can't assume CDC works. don't want to default to | |
1564 | * anything less functional on CDC-capable hardware, | |
1565 | * so we fail in this case. | |
1566 | */ | |
7de73185 | 1567 | error("controller '%s' not recognized", |
23cd1385 RB |
1568 | gadget->name); |
1569 | return -ENODEV; | |
1570 | } | |
1571 | ||
1572 | /* CDC subset ... recognized by Linux since 2.4.10, but Windows | |
1573 | * drivers aren't widely available. (That may be improved by | |
1574 | * supporting one submode of the "SAFE" variant of MDLM.) | |
1575 | */ | |
1576 | if (!cdc) { | |
1577 | device_desc.idVendor = | |
1578 | __constant_cpu_to_le16(SIMPLE_VENDOR_NUM); | |
1579 | device_desc.idProduct = | |
1580 | __constant_cpu_to_le16(SIMPLE_PRODUCT_NUM); | |
1581 | } | |
1582 | ||
1583 | /* support optional vendor/distro customization */ | |
1584 | #if defined(CONFIG_USB_CDC_VENDOR_ID) && defined(CONFIG_USB_CDC_PRODUCT_ID) | |
1585 | device_desc.idVendor = cpu_to_le16(CONFIG_USB_CDC_VENDOR_ID); | |
1586 | device_desc.idProduct = cpu_to_le16(CONFIG_USB_CDC_PRODUCT_ID); | |
1587 | #endif | |
1588 | if (bcdDevice) | |
1589 | device_desc.bcdDevice = cpu_to_le16(bcdDevice); | |
1590 | if (iManufacturer) | |
2e12abe6 | 1591 | strlcpy (manufacturer, iManufacturer, sizeof manufacturer); |
23cd1385 | 1592 | if (iProduct) |
2e12abe6 | 1593 | strlcpy (product_desc, iProduct, sizeof product_desc); |
23cd1385 RB |
1594 | if (iSerialNumber) { |
1595 | device_desc.iSerialNumber = STRING_SERIALNUMBER, | |
2e12abe6 | 1596 | strlcpy(serial_number, iSerialNumber, sizeof serial_number); |
23cd1385 RB |
1597 | } |
1598 | ||
1599 | /* all we really need is bulk IN/OUT */ | |
1600 | usb_ep_autoconfig_reset (gadget); | |
1601 | in_ep = usb_ep_autoconfig (gadget, &fs_source_desc); | |
1602 | if (!in_ep) { | |
1603 | autoconf_fail: | |
7de73185 | 1604 | error("can't autoconfigure on %s\n", |
23cd1385 RB |
1605 | gadget->name); |
1606 | return -ENODEV; | |
1607 | } | |
1608 | in_ep->driver_data = in_ep; /* claim */ | |
1609 | ||
1610 | out_ep = usb_ep_autoconfig (gadget, &fs_sink_desc); | |
1611 | if (!out_ep) | |
1612 | goto autoconf_fail; | |
1613 | out_ep->driver_data = out_ep; /* claim */ | |
1614 | ||
1615 | #if defined(DEV_CONFIG_CDC) | |
1616 | /* CDC Ethernet control interface doesn't require a status endpoint. | |
1617 | * Since some hosts expect one, try to allocate one anyway. | |
1618 | */ | |
1619 | if (cdc) { | |
1620 | status_ep = usb_ep_autoconfig (gadget, &fs_status_desc); | |
1621 | if (status_ep) { | |
1622 | status_ep->driver_data = status_ep; /* claim */ | |
1623 | } else if (cdc) { | |
1624 | control_intf.bNumEndpoints = 0; | |
1625 | /* FIXME remove endpoint from descriptor list */ | |
1626 | } | |
1627 | } | |
1628 | #endif | |
1629 | ||
1630 | /* one config: cdc, else minimal subset */ | |
1631 | if (!cdc) { | |
1632 | eth_config.bNumInterfaces = 1; | |
1633 | eth_config.iConfiguration = STRING_SUBSET; | |
1634 | ||
1635 | /* use functions to set these up, in case we're built to work | |
1636 | * with multiple controllers and must override CDC Ethernet. | |
1637 | */ | |
1638 | fs_subset_descriptors(); | |
1639 | hs_subset_descriptors(); | |
1640 | } | |
1641 | ||
1642 | device_desc.bMaxPacketSize0 = gadget->ep0->maxpacket; | |
1643 | usb_gadget_set_selfpowered (gadget); | |
1644 | ||
1645 | if (gadget_is_dualspeed(gadget)) { | |
1646 | if (!cdc) | |
1647 | dev_qualifier.bDeviceClass = USB_CLASS_VENDOR_SPEC; | |
1648 | ||
1649 | /* assumes ep0 uses the same value for both speeds ... */ | |
1650 | dev_qualifier.bMaxPacketSize0 = device_desc.bMaxPacketSize0; | |
1651 | ||
1652 | /* and that all endpoints are dual-speed */ | |
1653 | hs_source_desc.bEndpointAddress = | |
1654 | fs_source_desc.bEndpointAddress; | |
1655 | hs_sink_desc.bEndpointAddress = | |
1656 | fs_sink_desc.bEndpointAddress; | |
1657 | #if defined(DEV_CONFIG_CDC) | |
1658 | if (status_ep) | |
1659 | hs_status_desc.bEndpointAddress = | |
1660 | fs_status_desc.bEndpointAddress; | |
1661 | #endif | |
1662 | } | |
1663 | ||
1664 | if (gadget_is_otg(gadget)) { | |
1665 | otg_descriptor.bmAttributes |= USB_OTG_HNP, | |
1666 | eth_config.bmAttributes |= USB_CONFIG_ATT_WAKEUP; | |
1667 | eth_config.bMaxPower = 4; | |
1668 | } | |
1669 | ||
1670 | dev->net = &l_netdev; | |
1671 | strcpy (dev->net->name, USB_NET_NAME); | |
1672 | ||
1673 | dev->cdc = cdc; | |
1674 | dev->zlp = zlp; | |
1675 | ||
1676 | dev->in_ep = in_ep; | |
1677 | dev->out_ep = out_ep; | |
1678 | dev->status_ep = status_ep; | |
1679 | ||
1680 | /* Module params for these addresses should come from ID proms. | |
1681 | * The host side address is used with CDC, and commonly | |
1682 | * ends up in a persistent config database. It's not clear if | |
1683 | * host side code for the SAFE thing cares -- its original BLAN | |
1684 | * thing didn't, Sharp never assigned those addresses on Zaurii. | |
1685 | */ | |
1686 | get_ether_addr(dev_addr, dev->net->enetaddr); | |
1687 | ||
1688 | memset(tmp, 0, sizeof(tmp)); | |
1689 | memcpy(tmp, dev->net->enetaddr, sizeof(dev->net->enetaddr)); | |
1690 | ||
1691 | get_ether_addr(host_addr, dev->host_mac); | |
1692 | ||
1693 | sprintf (ethaddr, "%02X%02X%02X%02X%02X%02X", | |
1694 | dev->host_mac [0], dev->host_mac [1], | |
1695 | dev->host_mac [2], dev->host_mac [3], | |
1696 | dev->host_mac [4], dev->host_mac [5]); | |
1697 | ||
7de73185 | 1698 | printf("using %s, OUT %s IN %s%s%s\n", gadget->name, |
23cd1385 RB |
1699 | out_ep->name, in_ep->name, |
1700 | status_ep ? " STATUS " : "", | |
1701 | status_ep ? status_ep->name : "" | |
1702 | ); | |
7de73185 | 1703 | printf("MAC %02x:%02x:%02x:%02x:%02x:%02x\n", |
23cd1385 RB |
1704 | dev->net->enetaddr [0], dev->net->enetaddr [1], |
1705 | dev->net->enetaddr [2], dev->net->enetaddr [3], | |
1706 | dev->net->enetaddr [4], dev->net->enetaddr [5]); | |
1707 | ||
1708 | if (cdc) { | |
7de73185 | 1709 | printf("HOST MAC %02x:%02x:%02x:%02x:%02x:%02x\n", |
23cd1385 RB |
1710 | dev->host_mac [0], dev->host_mac [1], |
1711 | dev->host_mac [2], dev->host_mac [3], | |
1712 | dev->host_mac [4], dev->host_mac [5]); | |
1713 | } | |
1714 | ||
1715 | /* use PKTSIZE (or aligned... from u-boot) and set | |
1716 | * wMaxSegmentSize accordingly*/ | |
1717 | dev->mtu = PKTSIZE_ALIGN; /* RNDIS does not like this, only 1514, TODO*/ | |
1718 | ||
1719 | /* preallocate control message data and buffer */ | |
1720 | dev->req = usb_ep_alloc_request (gadget->ep0, GFP_KERNEL); | |
1721 | if (!dev->req) | |
1722 | goto fail; | |
1723 | dev->req->buf = control_req; | |
1724 | dev->req->complete = eth_setup_complete; | |
1725 | ||
1726 | /* ... and maybe likewise for status transfer */ | |
1727 | #if defined(DEV_CONFIG_CDC) | |
1728 | if (dev->status_ep) { | |
1729 | dev->stat_req = usb_ep_alloc_request(gadget->ep0, GFP_KERNEL); | |
1730 | dev->stat_req->buf = status_req; | |
1731 | if (!dev->stat_req) { | |
1732 | dev->stat_req->buf=NULL; | |
1733 | usb_ep_free_request (gadget->ep0, dev->req); | |
1734 | ||
1735 | goto fail; | |
1736 | } | |
1737 | dev->stat_req->context = NULL; | |
1738 | } | |
1739 | #endif | |
1740 | ||
1741 | /* finish hookup to lower layer ... */ | |
1742 | dev->gadget = gadget; | |
1743 | set_gadget_data (gadget, dev); | |
1744 | gadget->ep0->driver_data = dev; | |
1745 | ||
1746 | /* two kinds of host-initiated state changes: | |
1747 | * - iff DATA transfer is active, carrier is "on" | |
1748 | * - tx queueing enabled if open *and* carrier is "on" | |
1749 | */ | |
1750 | return 0; | |
1751 | ||
1752 | fail: | |
7de73185 | 1753 | error("%s failed", __func__); |
23cd1385 RB |
1754 | eth_unbind (gadget); |
1755 | return -ENOMEM; | |
1756 | } | |
1757 | ||
1758 | static int usb_eth_init(struct eth_device* netdev, bd_t* bd) | |
1759 | { | |
1760 | struct eth_dev *dev=&l_ethdev; | |
1761 | struct usb_gadget *gadget; | |
1762 | unsigned long ts; | |
1763 | unsigned long timeout = USB_CONNECT_TIMEOUT; | |
1764 | ||
1765 | if (!netdev) { | |
7de73185 | 1766 | error("received NULL ptr"); |
23cd1385 RB |
1767 | goto fail; |
1768 | } | |
1769 | ||
1770 | dev->network_started = 0; | |
1771 | dev->tx_req = NULL; | |
1772 | dev->rx_req = NULL; | |
1773 | ||
1774 | packet_received = 0; | |
1775 | packet_sent = 0; | |
1776 | ||
1777 | gadget = dev->gadget; | |
1778 | usb_gadget_connect(gadget); | |
1779 | ||
1780 | if (getenv("cdc_connect_timeout")) | |
1781 | timeout = simple_strtoul(getenv("cdc_connect_timeout"), | |
1782 | NULL, 10) * CONFIG_SYS_HZ; | |
1783 | ts = get_timer(0); | |
1784 | while (!l_ethdev.network_started) | |
1785 | { | |
1786 | /* Handle control-c and timeouts */ | |
1787 | if (ctrlc() || (get_timer(ts) > timeout)) { | |
7de73185 | 1788 | error("The remote end did not respond in time."); |
23cd1385 RB |
1789 | goto fail; |
1790 | } | |
1791 | usb_gadget_handle_interrupts(); | |
1792 | } | |
1793 | ||
1794 | rx_submit (dev, dev->rx_req, 0); | |
1795 | return 0; | |
1796 | fail: | |
1797 | return -1; | |
1798 | } | |
1799 | ||
1800 | static int usb_eth_send(struct eth_device* netdev, volatile void* packet, int length) | |
1801 | { | |
1802 | int retval; | |
1803 | struct usb_request *req = NULL; | |
7de73185 | 1804 | struct eth_dev *dev = &l_ethdev; |
23cd1385 | 1805 | |
7de73185 | 1806 | debug("%s:...\n", __func__); |
23cd1385 RB |
1807 | |
1808 | req = dev->tx_req; | |
1809 | ||
1810 | req->buf = (void *)packet; | |
1811 | req->context = NULL; | |
1812 | req->complete = tx_complete; | |
1813 | ||
1814 | /* use zlp framing on tx for strict CDC-Ether conformance, | |
1815 | * though any robust network rx path ignores extra padding. | |
1816 | * and some hardware doesn't like to write zlps. | |
1817 | */ | |
1818 | req->zero = 1; | |
1819 | if (!dev->zlp && (length % dev->in_ep->maxpacket) == 0) | |
1820 | length++; | |
1821 | ||
1822 | req->length = length; | |
1823 | #if 0 | |
1824 | /* throttle highspeed IRQ rate back slightly */ | |
1825 | if (gadget_is_dualspeed(dev->gadget)) | |
1826 | req->no_interrupt = (dev->gadget->speed == USB_SPEED_HIGH) | |
1827 | ? ((dev->tx_qlen % qmult) != 0) : 0; | |
1828 | #endif | |
1829 | dev->tx_qlen=1; | |
1830 | ||
1831 | retval = usb_ep_queue (dev->in_ep, req, GFP_ATOMIC); | |
1832 | ||
1833 | if (!retval) | |
7de73185 | 1834 | debug("%s: packet queued\n", __func__); |
23cd1385 RB |
1835 | while(!packet_sent) |
1836 | { | |
1837 | packet_sent=0; | |
1838 | } | |
1839 | ||
1840 | return 0; | |
1841 | } | |
1842 | ||
1843 | static int usb_eth_recv(struct eth_device* netdev) | |
1844 | { | |
1845 | struct eth_dev *dev = &l_ethdev; | |
1846 | ||
1847 | usb_gadget_handle_interrupts(); | |
1848 | ||
1849 | if (packet_received) | |
1850 | { | |
7de73185 | 1851 | debug("%s: packet received \n", __func__); |
23cd1385 RB |
1852 | if (dev->rx_req) |
1853 | { | |
1854 | NetReceive(NetRxPackets[0],dev->rx_req->length); | |
1855 | packet_received=0; | |
1856 | ||
1857 | if (dev->rx_req) | |
1858 | rx_submit (dev, dev->rx_req, 0); | |
1859 | } | |
7de73185 | 1860 | else error("dev->rx_req invalid"); |
23cd1385 RB |
1861 | } |
1862 | return 0; | |
1863 | } | |
1864 | ||
1865 | void usb_eth_halt(struct eth_device* netdev) | |
1866 | { | |
1867 | struct eth_dev *dev =&l_ethdev; | |
1868 | ||
1869 | if (!netdev) | |
1870 | { | |
7de73185 | 1871 | error("received NULL ptr"); |
23cd1385 RB |
1872 | return; |
1873 | } | |
1874 | ||
1875 | usb_gadget_disconnect(dev->gadget); | |
1876 | } | |
1877 | ||
1878 | static struct usb_gadget_driver eth_driver = { | |
1879 | .speed = DEVSPEED, | |
1880 | ||
1881 | .bind = eth_bind, | |
1882 | .unbind = eth_unbind, | |
1883 | ||
1884 | .setup = eth_setup, | |
1885 | .disconnect = eth_disconnect, | |
1886 | ||
1887 | .suspend = eth_suspend, | |
1888 | .resume = eth_resume, | |
1889 | }; | |
1890 | ||
1891 | int usb_eth_initialize(bd_t *bi) | |
1892 | { | |
1893 | int status = 0; | |
1894 | struct eth_device *netdev=&l_netdev; | |
1895 | ||
1896 | sprintf(netdev->name,"usb_ether"); | |
1897 | ||
1898 | netdev->init = usb_eth_init; | |
1899 | netdev->send = usb_eth_send; | |
1900 | netdev->recv = usb_eth_recv; | |
1901 | netdev->halt = usb_eth_halt; | |
1902 | ||
1903 | #ifdef CONFIG_MCAST_TFTP | |
1904 | #error not supported | |
1905 | #endif | |
1906 | /* Configure default mac-addresses for the USB ethernet device */ | |
1907 | #ifdef CONFIG_USBNET_DEV_ADDR | |
1908 | strncpy(dev_addr, CONFIG_USBNET_DEV_ADDR, sizeof(dev_addr)); | |
1909 | #endif | |
1910 | #ifdef CONFIG_USBNET_HOST_ADDR | |
1911 | strncpy(host_addr, CONFIG_USBNET_HOST_ADDR, sizeof(host_addr)); | |
1912 | #endif | |
1913 | /* Check if the user overruled the MAC addresses */ | |
1914 | if (getenv("usbnet_devaddr")) | |
1915 | strncpy(dev_addr, getenv("usbnet_devaddr"), | |
1916 | sizeof(dev_addr)); | |
1917 | ||
1918 | if (getenv("usbnet_hostaddr")) | |
1919 | strncpy(host_addr, getenv("usbnet_hostaddr"), | |
1920 | sizeof(host_addr)); | |
1921 | ||
1922 | /* Make sure both strings are terminated */ | |
1923 | dev_addr[sizeof(dev_addr)-1] = '\0'; | |
1924 | host_addr[sizeof(host_addr)-1] = '\0'; | |
1925 | ||
1926 | if (!is_eth_addr_valid(dev_addr)) { | |
7de73185 | 1927 | error("Need valid 'usbnet_devaddr' to be set"); |
23cd1385 RB |
1928 | status = -1; |
1929 | } | |
1930 | if (!is_eth_addr_valid(host_addr)) { | |
7de73185 | 1931 | error("Need valid 'usbnet_hostaddr' to be set"); |
23cd1385 RB |
1932 | status = -1; |
1933 | } | |
1934 | if (status) | |
1935 | goto fail; | |
1936 | ||
1937 | status = usb_gadget_register_driver(ð_driver); | |
1938 | if (status < 0) | |
1939 | goto fail; | |
1940 | ||
1941 | eth_register(netdev); | |
1942 | return 0; | |
1943 | ||
1944 | fail: | |
7de73185 | 1945 | error("%s failed. error = %d", __func__, status); |
23cd1385 RB |
1946 | return status; |
1947 | } | |
1948 |